I always fancied the knickers off the redhead. Always had a thing for redheads, if you know what I mean. (snigger).
Funnily enough, my favourite ABBA songs are on the second Greatest Hits album, More ABBA Gold.
The Day Before You Came, Our Last Summer, Cassandra, When All Is Said and Done, possibly because all their relationships had gone to Sheol in a handcart, which always makes for great breakup songs. Cassandra is a truly lost classic, IMHO.

I found myself in the slightly odd position of having a crush on the blone one from ABBA a few years ago. Fancying someone from the past is weird. Now she’s actually almost as old as my Mum.